Planoorapii



E. .N. CHANDLER.

INSOLEL APPLICATION FILED MAR 28. I916.

1,31 1,154. Patented July 29,1919.

THE COLUMBIA PLANDGRAPH (20., WASHINGTON. D. c.

To" all whom it may concern:

Be it known that I, EDWIN N. CHANDLER, a citizen of the United States, and resident of Braintree,county of Norfolk,"and State of Massachusetts, have invented an Imp-rovement in Insoles, of'which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My present inventionis an improved in sole'for use in the manufacture of welt boots and shoes. In preparing the insole for a Welt shoe, it is necessary to form a sewing rib around the forepart and shank andmy present invention relates particularly to this feature, enabling an improved welt insole'to be produced from very thln stock, aswell as from. inexpensiveleather. The use of thin and inexpensive leather. in insoles is of great'importance, constituting a material saving in the cost of a shoe, but hereto-fore it has been found very difficult in utilizing such material for insoles, the sewing rib formed thereon being apt to tear out, particularly around the toe. My invention contemplates the provision of a sewing r1b constituting a plurality of members, preferably united by adhesives into a composite rib. I prepare my improved welt insole by forming two parallel lips or flaps parallel with the marginal portion, splitting the edge of the insole andv turning up one lip, then channeling the insole and turning up a second lip or flap parallel with the first, and then interposing a reinforcing element between the lip'and flap cut from the insole, thus constituting a composite sewing rib of at least three members, theintermediate reinforcing element being of any suitable material, such as a strip of tape, thin leather, or a cord, and preferably these three mem bers are united by any suitable adhesive into a solid and rigid sewing rib. The adhesive may be applied in any manner, for example, the reinforcing element may be coated with the adhesive as the same is fed into position, and the union of three members may be completed by pressure, or by heat and pressure, or otherwise, such as by staples, stitches or the like. An insole thus prepared presents a sewing rib, (even with the lip and flap cut therefrom being extremely thin) of great strength, owing to the continuous reinforcing element between the two other members. Especially this strength is imparted around the toe, and the lip and flap if STATES PA EDWIN 1\T. CHANDLER, OF BRAINT-REE, MASSACHUSETTS. if

e mo.

INSOLE.

Specification of Letters Patent. Patented July 29, 1919,

Appfication filed March 28, 1916. Serial No. 87,334.

being of thin substance will fold easily, substantially without wrinkles, over the inter v mediate reinforcing element, around curved portions and sharp toes.

WVhile it is old in this art to out both a lip and flap in an insole, to form the sewing rib thereby, it is believed to be a distinct novelty to use'a lip and flap with an intermediate reinforcing element, and I'wish to claim the same broadly. This construction of an intermediate and preferably continuous reinforcing member results in many advantages, such as enabling thin stock to be used for insoles, a very thin lip and flap cut therefrom,

even folding of the lip and flap upon the intermediate reinforcing element, eliminating wrinkles around the toe and other curved portions, and furthermore enabling cheap and hard stock to be employed, which ordinarily would not enable a channel flap or rib to be cut and successfully used.

In the process of forming my improved insole, I prefer. to use adhesive to unite the three members constituting the sewing rib,

.Fig. 3, showing a strip type of reinforcing element.

The insole 1 is usually formed with a con tour substantially as desired for a particular style and size of shoe, and the marginal. portion is then split and the resulting feather 2 formed, and a lip 3 cut therefrom is turned upwardly, entirely around the marginal portion of the forepart and shank on the insole.

Parallel with the rib 3 and onthe inner side thereof a channel l is cut, and the resulting flap 5 turned upwardly constituting a second member preferably of the same height and equal in extent around forepart and shank with the lip 3. Between this lip and flap is then applied a reinforcing element 6, which, as shown in Figs. 1, 2 and shown in Fig. 4, this intermediate member 7 may be in strip form, and of textile material, or of thin scrap leather. I prefer to unite the three members constituting the composite rib by means of an adhesive, rubber cement being well suited to this purpose, forming a rigid rib of great strength, even though the three elements composing it are each extremely thin. The three members may be simply held in shape by the relatively heavy molding pressure applied thereto, if desired, or by thin metallic staples, or a few stitches, being more permanently united by the inseam stitching in the subsequent welt sewing operation, some of such inseam stitching usually passing through all three members in the rib.

My prepared insole after the welt sewing operation, enables the lip 3, flap 5 and intermediate reinforcing member to be readily trimmed by the inseam trimming cutters.

'The intermediate reinforcing element will enable the inseam stitching to be set with considerable tension, without danger of tearing through the composite sewing rib, especially around the toe, where such clamages are especially apt to occur. The entire insole may be quickly and economically manufactured, of the less expensive leather stock, as well as of Very thin material.

My invention is further described and de fined in the form of claims, as follows:

1. A welt insole for boots and shoes, comprising a leather blank having a composite sewing rib formed around the marginal portion of the forepart and shank of the blank, consisting in a lip and a flap cut from said blanks parallel with each other and each turned upwardly and backwardly toward the other, being united by an intermediate reinforcing element between the lip and flap to constitute the composite sewing rib.

2. A welt insole for boots and shoes, comprising a leather blank having a composite sewing rib formed around the marginal portion of the forepart and shank of the blank, consisting in a lip and a flap out from said blanks parallel with each other and each turned upwardly and backwardly toward the other a continuous reinforcing element 7 between said lip and flap and means to unite the lip and flap and reinforcing together into a substantially solid sewing rib.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDWIN N. CHANDLER.

WVitnesses JAMES R. HoDDER, HAROLD J. CLARK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

